The University of Colorado, Boulder is presenting the 23rd Regional conference on the History and Philosophy of Science October 12-13, 2007. "Modality in Science" with Keynote speakers Alan Hájek and Bas van Fraassen. Now accepting papers or abstracts. Deadline July 9th, 2007. Send submissions to Professor Bradley Monton, Department of Philosophy, 169 Hellems, UCB 232, University of Colorado, Boulder, Boulder, CO 80309-0232 or email Bradley.Monton@colorado.edu